Method of making a sheet metal article



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METHOD OF MAKING A SHEET METAL ARTICLE Filed Oct. 27; 1932 1 G STMLL GE E}, '5.

5 with male and female dies.

Patented Dec. 10, 1935 UNITED STATES PATENT. OFFICE METHOD OF MAKIN AR I G A SHEET'METAL 1 Claim.

My invention relates to a novel method of cutting, forming and making a sheet metal article having a longitudinal slot, flanged edges on three sides, and a tongue projecting from one end,

The invention consists of a combination of cutting, punching and forming dies of which a typical embodiment is illustrated in .the accompanying drawing, wherein:

Figures 1 and 2 show a perspective view of the male and female dies for cutting, forming and shaping the herein described sheet metal article.

Figure 3 shows a perspective View of the male member of a cutting or slotting die.

Figure 4 shows a perspective view of the female member of a cutting or slotting die, companion to Figure 3.

Figure 5 shows a perspective view of a cutting die.

Figure 6 shows a perspective view of the female member of a cutting die, companion to Figure 5.

Figure 7 shows a perspective view of a finished article of manufacture produced by means of the cutting, slotting and forming dies illustrated in Figures 123-4-5-6.

Numeral I designates the forming member of the male die, 2 a recessed member of the female die, 3 the cutting edge of the male die, 4 theslot in the female die into which 3 is forced, 5

the cutting edges of the die to the recesses into which 5-5 are forced, 1 the flanges which are produced by means of the forming die illustrated in Figure 1, 8 the slot cut by means of cutting edges 3 and 4 ofthe cutting or slotting dies illus- 5 trated in Figures 3 and 4, 9 an extended portion of the article formed by cutting edges 5 and 6.

' From the above detailed description of the in- 10 vention it is believed that the construction, method and operation thereof will at once be apparent, and while there are herein shown and described the preferred embodiments of the invention, it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as claimed.

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